FI/LS switches (RCBOs) provide personal and property protection as well as protection against electrically ignited fires in accordance with DIN VDE 0100-410 and DIN VDE 0100-530. They ensure the protection of single-phase circuits against overload and short-circuit currents, protection against sinusoidal alternating currents and pulsating currents with a smooth residual current component of up to 10 mA to earth. Additionally, they offer fault protection (protection against indirect contact), supplementary protection, and fire protection. They comply with the product standards IEC/EN 61009-1 (VDE 0664-20), IEC/EN 61009-2-1 (VDE 0664-21), and DIN EN 62423 (VDE 0664-40). Their applications include household, commercial, and industrial uses. The extensive range of accessories provides everything you need for your installation tasks. They offer an optimal compromise between safety and operational continuity thanks to their resistance to disturbances with surge current resistance (surge current waveform 8/20 μs) = 3,000 A against unwanted tripping and a 10 ms short-time delay. The DS201 MF is mixed-frequency sensitive, specifically designed for single-phase electronic consumers with frequency converters, with a frequency range of 0...1 kHz for detecting residual current. Rated breaking capacity according to IEC/EN 61009 Icn = 10 kA. The RCBO DS201 MF Type F is single-pole protected (LS) and double-pole switching.